Abstract:

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It is very possible for the foam zinc materials to take the place of zinc powder and become
a new ideal material of electrode for zinc-air battery, because of its excellent three dimensional
reticulated structure, high porosity, high specific surface area and uniform quality, and was widely
used in many other fields. A novel method for preparing very porous zinc foam was proposed, in
which the polyurethane foam as substrate was processed by degreasing process, roughening process,
activation, electroless plating and zinc electrodeposition. Then, experiments were carried out to
explore the effects of the solution composition（concentration of ZnSO4）and the operation conditions （such as the interelectrode distance; current density, temperature, pH value of electroplating
solution and so on) on the morphology of the foam zinc and the current efficiency. The optimum
experimental conditions were determined by optimizing the factors. On these conditions the foam
zinc presents a three-dimensional reticular structure with high porosity, and uniformity, and the
outward appearance of the coating is bright.

Abstract: Activated carbon fibers were prepared from stabilized PAN-based fibers by chemical
activation using hydroxides at different concentrations. The experimental data showed variations in specific surface area, microstructure, pore size distribution, and amounts of iodine adsorbed by the activated carbon fibers. Specific surface area of about 2244m2/g and iodine adsorption of 1202mg/g were obtained in the KOH 1.5M. However, the use of NaOH in the activation process rather than KOH and using the same time/ temperature profiles resulted in a carbon with a much
lower surface area. KOH is a more developed pore structure than NaOH, which means that KOH is a better activation agent in producing ACF than NaOH.

Abstract: Spheroidal composite filter material was made with activated clinoptilolite powder as the main stuff. The best condition of the process determined by orthogonal test were ωclinoptilolite: ωbond: ωadditive=55%:35%:10%, activation temperature at 150 ,activation time at 3h. The piled density, compressive stress and apparent porosity of the composite filter materials are 674Kg/m3, 4.32MPa and 59.02%. Compared with ceramsite and natural clinoptilolite, the composite filer materials has larger specific surface area and higher poriness, so it can be well used in BAF.

Abstract: Brush plating has been an important technology for the mending of the scratched surface of the engineering parts in recent years.The process for brush plating mending of scratched surface of the Austenite stainless steel parts is introduced in this article.The merits of the technology are discussed.

Abstract: After being subjected to thermal treatment by microwave, a carbon-based spent catalyst from vinyl acetate synthesis has been proved to be a good precursor for the production of ZnO/activated carbon (AC) composites. Different operating activated times were found to have effect on the properties of the composites. As the activated time rises, the surface area of the activated carbon that is acting as the catalyst support increases due to the decomposition of the organic deposits that are clogging the porous structure. XRD was used to evaluate the transformation of zinc acetate to zinc oxide after thermal treatment. Both the iodine adsorption capacity and the yield of the resulting composites were calculated and SEM-EDX analysis was used to evaluate the changes in surface morphology.

Abstract: The aims of this work were to utilize tea seed shell, biomass waste, for the preparation of activated carbon by zinc chloride activation. The effects of the preparation parameters, which were concentration of Zncl2, impregnation ratio, impregnation time and activation time, on the yield and adsorption capacity of methylene blue solution were analyzed in order to optimize these operation conditions by Orthogonal experiment. The experimental results show that the optimum activated carbon from tea seed shell was obtained by these conditions as follows: impregnation ratio of 50% ZnCl2/shell of 1:1.5, 2.5 hours impregnation time and 1.5 hours activation time in 500°C activation temperature.